Physics – Optics
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6267e.118c&link_type=abstract
Ground-based and Airborne Telescopes. Edited by Stepp, Larry M.. Proceedings of the SPIE, Volume 6267, pp. 62673L (2006).
Physics
Optics
Scientific paper
The James Clerk Maxwell Telescope (JCMT) on the summit of Mauna Kea is currently undergoing significant structural upgrade in order to accommodate the new generation instrument SCUBA-2 (Submillimeter Common-User Bolometric Array) which is being developed by the United Kingdom Astronomy Technology Centre (UK ATC). This four tonne instrument will be located at the Nasmyth focus of the telescope and will require five large auxiliary external warm mirrors to be installed on the telescope structure and in the receiver cabin along with dedicated automatically deployable tertiary mirror. The carousel of the observatory building as well as the original telescope structure was not designed for an instrument of this mass and complexity. The whole left Nasmyth platform of the telescope has to be removed and rebuilt in order to accommodate the instrument, its support structure and the warm optics. The floor of the observatory has to be reinforced and fitted with rail system and a scissor lift in order to handle the installation of the instrument on the telescope and removal from the telescope for maintenance. Details are given of particular challenges associated with handling, mechanical interfacing, optical alignment, design of the external warm mirrors mounts and the tertiary mirror deployment mechanism for SCUBA-2.
Chuter Timothy C.
Chylek Tomas
Craig Simon C.
Hileman Edward A.
Lewsley Harry J.
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